TomTom Go 550 Live Compatible Battery 3.7V 1100mAh

TomTom Go 550 Live — 3.7V Li-ion Replacement Battery (P11P11-43-S01)

This 3.7V 1100mAh Li-ion cell replaces the factory battery in the TomTom Go 550 Live GPS navigator. It fits the Go 550 Live and the 8CP5.011.11 hardware variant. Swap it in when the original cell no longer holds enough charge to run the device away from a power source.

• Go 550 Live and 8CP5.011.11 compatibility: Both variants use the same 3.7V battery bay, connector pinout, and charge management circuit. One cell covers both. No adapter or modification needed.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the Go 550 Live. The BMS accepted the cell without fault codes, charge termination fired correctly at capacity, and the device booted cleanly from flat.
• Cold-start satellite acquisition after swap: After fitting this cell, power the Go 550 Live on outdoors before driving. The GPS performs a cold start after any full power interruption — first satellite fix after a swap typically takes 5–10 minutes. Subsequent warm starts drop back under a minute once the almanac is cached.

GPS accuracy reduced at low battery on the Go 550 Live

When battery voltage drops below roughly 3.5V, some GPS receivers step down receiver sensitivity to reduce current draw. On the Go 550 Live this can appear as a position jumping or reduced fix quality in urban canyons or under tree cover. The fix degrades gradually — you may not notice until the device reports poor signal or starts re-routing incorrectly. Keeping the cell above 20% charge avoids the sensitivity reduction entirely.

Go 550 Live shuts off without warning before the battery indicator hits empty

The on-screen battery indicator on the Go 550 Live is calibrated against the original cell's discharge curve. A new cell or a degraded original can sit outside that curve, so the device hits its low-voltage cutoff — typically around 3.2V — before the indicator reaches one bar. The result looks like a sudden shutdown with battery still showing. After two or three full charge and discharge cycles on the replacement cell, the indicator recalibrates and the warning fires at the correct level.